How are calls rounded?

Each call you make is rounded depending on the rounding policy of the card. Some
cards have one minute rounding, which means that each call is rounded up to the
next whole minute. For example, a 65 second call would be rounded up to 2 minutes.
Some cards have 1+3 minute rounding, which means that after the first minute the
call is rounded in 3 minute increments. For example, a 3 minute call would be rounded
to 4 minutes. All calls lasting less than 1 minute are rounded up to 1 minute. Please
check each card’s rounding policy for more details.